TPS62052DGS

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TPS62052DGS is a DC-DC switching regulator with a synchronous rectification step-down converter. It is mainly used in mobile computing and wireless portable applications such as notebook PCs, Smart phones and Tablets. It can convert an input voltage of 2.3V up to 5.5V, to an output voltage of 0.3V up to VIN, with a maximum output current of 4.2A. It is integrated with a PowerPath topology feature and a low quiescent current operation. In addition, it has a programmable Switching frequency range from 250KHz to 2MHz, a variable output voltage and a low ripple noise of 173mV max at 4.2A output.

The TPS62052DGS is a highly efficient, fault tolerant, and cost effective synchronous rectifier step-down DC/DC converter. It is a programmable switching regulator and operates at a fixed frequency over the entire load current range. The regulator has been design with Power Path enable feature that provides low dropout operation and allows seamless high load current transition. The TPS62052DGS is manufactured in a 10-pin WSON package, allowing the device to be soldered directly onto a printed circuit board.

The TPS62052DGS is a Buck/Boost switching regulator that works by switching a voltage source in order to maintain a desired output voltage or load current. It utilizes a full-bridge output stage to provide current to the load. The full-bridge output stage is driven by a high-side driver and a low-side driver with a dual comparator to control the output voltage and current. The regulator also uses a Fault Signal Output to alert the system of any faults, providing a more robust design.

In order to optimize the TPS62052DGSs performance, two external components need to be present. The first component is a bootstrap circuit, consisting of a low-side MOSFET, a transformer winding and two capacitors. The purpose of the bootstrap circuit is to provide a constant voltage source to switch the upper MOSFET during the buck/boost switching operation. The second component is an external compensation network, consisting of a series RC network, commonly known as a PI filter. It is used to reduce the ripple voltage and is required for proper transient response.

In addition to the two external components, the TPS62052DGSs programmable switching frequency range can be adjusted with the Resistor Divider Network (R2/R1) according to the ESR and inductor ripple current. It also has an adjustable blanking window that can be adjusted according to the application’s switch-mode current setting. The TPS62052DGS comes with a soft-start feature to reduce the inrush current during start-up, an overtemperature protection to protect the device from excessively high junction temperatures.

Overall, the TPS62052DGS is an efficient and cost-effective synchronous rectifier step-down DC/DC converter. It is suitable for applications that require low dropout operation and high load current transition. It also provides robust features such as adjustable transition frequency, adjustable blanking window, load discharge and an overtemperature protection.

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